2004
DOI: 10.1089/153110704773600276
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Search for the OH (X2Π) Meinel Band Emission in Meteors as a Tracer of Mineral Water in Comets: Detection of N2+ (A-X)

Abstract: We report the discovery of the N(2)(+) A-X Meinel band in the 780-840 nm meteor emission from two Leonid meteoroids that were ejected less than 1000 years ago by comet 55P/Tempel-Tuttle. Our analysis indicates that the N(2)(+) molecule is at least an order of magnitude less abundant than expected, possibly as a result of charge transfer reactions with meteoric metal atoms. This new band was found while searching for rovibrational transitions in the X(2)Pi electronic ground state of OH (the OH Meinel band), a p… Show more

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Cited by 21 publications
(11 citation statements)
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“…On the other hand, OH A-X (0,0) emission at 310 nm has previously been identified in meteor spectra, including those of Leonids (Harvey, 1977;Abe et al, 2002;Jenniskens et al, 2002). We did not find ground-state OH X 2 P Meinel band emission in Leonid spectra, providing support to the hypothesis that the OH originates from the dissociation of water (Jenniskens et al, 2004c).…”
Section: Introductionsupporting
confidence: 83%
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“…On the other hand, OH A-X (0,0) emission at 310 nm has previously been identified in meteor spectra, including those of Leonids (Harvey, 1977;Abe et al, 2002;Jenniskens et al, 2002). We did not find ground-state OH X 2 P Meinel band emission in Leonid spectra, providing support to the hypothesis that the OH originates from the dissociation of water (Jenniskens et al, 2004c).…”
Section: Introductionsupporting
confidence: 83%
“…At this time, there was a detectable continuum emission, possibly because of dust or N 2 1 emission (Jenniskens et al, 2004c). Fitting the observed spectrum with a model air plasma spectrum as in Jenniskens et al (2004b,c) provided a means to separate the continuum and N 2 band.…”
Section: Temporal Variationmentioning
confidence: 90%
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“…We also do not observe the expected strong N 2 + emission in our spectrum (see also : Jenniskens et al, 2004c). We suspect that recombination is rapid, air plasma ionization is quickly transfered to meteoric metals, and most light originates in the region behind the meteoroid where the plasma has had time to equilibrate to some extend.…”
Section: Temperature Across the Meteor Trailmentioning
confidence: 56%